Question

I NEED HELP PLEASE! :)

Answer 1

Answer: 405 cubic cm

==================================================

Work Shown:

The base is a square with side length 9, so the area of the base is 9^2 = 9*9 = 81 square cm.

$V = \text{volume of square pyramid}\\\\V = \frac{1}{3}*(\text{area of base})*\text{height}\\\\V = \frac{1}{3}*(81)*15\\\\V = 405$

Units for the volume are in cubic cm.

Answer 2

V=405cm3
V=a^2h/3=9^2•15/3=405cm3